templater: fix revset() to evaluate format arguments eagerly

See the previous patch for why. This patch also removes redundant list()
construction from a list.

mercurial/templater.py

@@ -578,7 +578,7 b' def revset(context, mapping, args):'
         return m(repo)
 
     if len(args) > 1:
-        formatargs = list([a[0](context, mapping, a[1]) for a in args[1:]])
+        formatargs = [evalfuncarg(context, mapping, a) for a in args[1:]]
         revs = query(revsetmod.formatspec(raw, *formatargs))
         revs = list(revs)
     else:

tests/test-command-template.t

@@ -3305,6 +3305,9 b' Test revset function'
   $ hg log --template '{revset("TIP"|lower)}\n' -l1
   2
 
+  $ hg log -T '{revset("%s", "t{"ip"}")}\n' -l1
+  2
+
  a list template is evaluated for each item of revset/parents
 
   $ hg log -T '{rev} p: {revset("p1(%s)", rev) % "{rev}:{node|short}"}\n'